Double-capacity well pump



1,601,114 IN. FLETCHER Filed June 13. 1925 2 sneets shee1 i DOUBLE CAPACITY WELL PUMP Sept. 28

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area-r NAPOLEON FLETCHER, OF FARWELL, TEXAS.

DOUBLE-CAPACITY WELL PUMP.

Application filed June 13,' 1925.

space between the inner and outer cylinders is separated into lower and upper chambers.

Figure 2 is a sectional view taken on a.

plane extending vertically and centrally through the pump, 7

Figure 3 is a sectional view taken on the vertioalpla-ne indicated by the line 33 of Figure 2,

Figure 4 is a detail perspective view of the partition by which the space between the inner and outer cylinders of the pump are separated into lower and upper chambers, and a Figure 5 is a sectional view taken on the horizontal plane indicated by the line 55 of Figure 2. 7

Corresponding and like parts are referred to in the following description, and desig- 30 nated in the several views of the accompanying drawings, by similar reference characters.

The pump comprises relatively spaced inner and outer cylinders 1 and 2, respectively. The cylinders 1 and 2 are secured in spaced relation, and the ends of the outer cylinder 2 are closed by a bottom plug 3 and top plug 4, which have an external screw threaded connection with the inner cylinder 1 and an internal screw threaded connection with the outer cylinder 2. An intake port 5 communicating withthe lower end of the inner cylinder 1 and a discharge port 6 communicating with the upper end of this cylinder, are formed respectively in thebottom plug 3 and top plug 4, The inner cylinder 1 is divided into a lower chamber 7 and an upper chamber 8 by a plug 9 supported within this cylinder centrally between the ends thereof. The space between the inner cylinder 1 and the outer cylinder 2 is divided into a lower compartment 10 and an upper compartment 11 by a partition which comprises horizontally disposed semi-annular members 12 and 13 and vertically disposed bars 14. The member 12 piston 23.

Serial No. 36,920.

is located below the member 13, these mem.

bers are connected by the strips 14, and they extend in opposite directions from said strips. he members 12 and 13 occupy positions at opposite sides of the inner cylinder 1 and have a snug fit with the opposing surfaces of this and the outer cylinder 2. The strips 14 occupy positions at opposite sides of the inner cylinder 1 and have a snug lit with the opposing surfaces ofv the cylinders. The partition may be secured in place by cap screws 15 or in any other suitable manner; Openings 16 formed in the inner cylinder 1 between the plug 9 and partition member 13 and at one side of the partition strips 14, establish communication between the upper end of the lower chamber 10 and the lower end of the upper chamber '8. Openings 17 formed in the inner cylinder 1 between the plug 9 and partition member 12 and at the opposite side of the partition strips 14, establish communication between the upper end of the lower chamber 7 and the lower end of the upper chamber 11. Communication between the lower ends of the chambers 7 and 10 is established by an annular series of openings 18 in the cylinder 1, and communication between the upper ends of the chambers 8 and 11 is established by an annularseries of openings 19 in this cylinder.

A foot valve 20 is located in the lower end of the inner cylinder 1 and rests on a conical seat 21. A valved piston 22, is arranged within the cylinder 1 between the plug 9 and foot valve 20, and a similar piston 23 is arranged inthis cylinder above the plug 9. The plug'9 is supported from the foot valve 20 by a rod 24 which passes through the piston 22. I The pistons 22 and 23 are connected together by rods 25 which pass through the plug 9 and stuffing boxes 26 carried by said plug. An operating rod 27 is'sec-ured to the From the foregoing description, taken in connection with the accompanying drawtend to give exactproportions.

draw water into the chamber 8 by way of the intake port 5, openings 18, chamber 10 and openings 16, and at the same time force water out through the discharge port 6. In view of the manner in which they are con nected together and to the operating rod 28, the foot valve 20, piston 22, plug 9, and piston 23 may be simultaneously moved from the inner cylinder 1 for repair or other purposes. The pump will lift double the quantity of water of a single lit't pump, it is simple and durable, and all parts thereof? that are subjected to wear may be readily removed "for repairs and replacements without withdrawing the cylinders "from the well.

It should be understood that the drawings are merely illustrative and do not pre- Furthermore, the said drawings are illustrative of a preferred construction. it being my expectation that various changes and modifications may be made without departing "from the spirit and scope of my invention.

lVhat is claimed is:

1. A double capacity pump con'iprising' spaced inner and outer cylinders, a partition separating the inner cylinder into lower and upper chambers, a partition se raratii the Space between the cylinders into lower and upper chambers and embodying spaced semi-annular members horizontally disposed and located at opposite sides of the inner cylinder and vertically disposed strips connecting said members, said inner cylinder being provided with openings adjacent its ends and with openings located between the partition of the inner cylinder and the horizontal partition members, a foot valve in the lower end of the inner cylinder, a valved piston in each chamber .of the inner cylinder. and operating and connecting means for the pistons.

2. A double capacity pump comprising an inner cylinder. a foot valve within the cylinder, a partition within the cylinder. :1 rod supporting the partition from the foot valve, a piston within the cylinder below the partition, a piston witnin the cylinder above the partition. rods connected to the pistons and passing through the partition, an operating; rod connected to the upper piston. a lower chamber communicating with the cylin der above and below the partition. and an upper chamber communicating;- with the cylinder above and below the partition.

3.1 double capacity pump (fmllpliSilljj spaced inner and outer cylinders, a partition separatingthe inner cylinder into hunter and upper chambers, a second partition inserted between the cylinders to divide the intermediate space into lower and upper chainbers, said second partition cmbodving ver tically spaced semi-annular members hori zontally disposed and located above and below the first partition at oppopite sides of the inner cylinder, said second partition also embodying vertically disposed strips connecting said members and located at other opposite sides of the inner cylinder, means securing the second partition to the outer cylinder, said inner cylinder being provided with openings adjacent its ends and with openings located between the lirst partition and the horizontal members of the second partition, a foot valve in the lower end of the inner cylinder, a valved piston in each chamber oi the inner cylinder. and operatings and connecting means for the pistonr.

4. A double capacity pump (jfilllllllfilllg spaced inner and outer cylinders, a partition separating the inner cylinder into lower and upper chambers. a second partition inserted between the cylinders to divide the intermediate space into lower and upper chambers, said' second partition embodying vertically spaced semi-annular inemberi'z horizontally disposed and located above and below the first partition at opposite sides of the inner cylinder, said second partition also embodying vertically disposed strips connecting said members and located at other opposite sides of the inner cylinder. mean; Securing the second partition to the outer cylinder, said inner cylinder being provided with openings adjacent its ends and with openings located between the first partition and the horizontal members of the second partition, a foot valve in the lower end of the inner cylinder. a rod supporting the first partition from the loot valve. a valved pi. ton in each chamber of the inner c .ler. rods connecting the pistons and pasine' through the first partition. and piston operating means.

In testimony whereo1 l afiix my s'ioniatui'e.

NAPOLEOB *LETFHHR. 

